Continuous heat-interchanging arrangement for coke-ovens.



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CONTINUOUS HEAT-INTEBCHLNGING ABRANGEMNT FOB 00m-OVENB.

Bpeciication of Letters Patent.

Patented Ranch 93,1909.

Application led Iune, 1907. Serielle. 877,588.

To all 'whom 'it may concern:

Be it known that I, ERNEST SoLvAY, a subect of the King of the Belgiens, residing at russels, Belgium, have invented new and useful Improvements in Continuous Heat-Intercwhmino Arrangements for Coke- ()vens, of whic te following is n. specification.

My invention relates to that type of apparatus in which the air whichlsupplies the oxygen for the combustion of the b urning gas used to heat the retort or oven 1s continuously heated by the interchange of the heat of the products of combustion through interve walls of their respective pas sages, as istinguishecl from that us' 0 an arrangement of the Siemens t e, rit renerators into which are passe altematel the hot gases of combustion, and the air to be heated.

My invention consists in the combination and ement of parts hereinafter shown and descn d, to the end of improved results in o eration, as Well as increased durability of t e apparatus, and economy in construction and making repgisrs.

The invention will be t understood by reference to the accompanying drawings, in which;

Figure l shows in vertical longitudinal section, a coking chamber or oven and its heat interchanger. Fig. 2 is a vertical section of the heat interchanger the sides and the lower art of the coking chamber, on the line A, A, ig. l, and Fig. 3 isa. longitudinal section on the line B, B, Fig. 1.

The side walls W, W of the oven, which also form the division walls of the oven block, are maintained below the door ofthe oven, so as to form below the oven an open" space K within which is located the heat interchanger R, independentlv sup upon the same foundations port the Walls.

In the brick-work immediatel belowthe oven is located a horizontal ue lof, considerable size, called the sole flue d, which'extends thelenth of the oven, into which are dischar ed t e hot, spentgases 'of combustion; and etween this and the top of the beat interchanger is an inclosed o en orted h ofthe s ole ue,

'ternally within the oven walls. Below this space e is located the heat inter er R,y which is structurally independent o the oven or coking chamber g althou h supported on the same foundations whici carry theA oven. walls. It consists essentially of a series of rows of refractory bricks a, which are hollow or perforated in one direction, and put together end to end so as to form continuous conduits in the interior of the bricks as at 6,..

the spaces between the various rows forming, flues c at right angles to these conduits, havf no connect' opening to said conduits.

he discharge ne f for the spent gases of combustion from the sol'e ue is provided with a central partition h so arranged that these ases are caused to rst pass in Bulbdivid form through one-half of the interchanger in one direction, and. then through the other half in the reverse direction, and thence by passage i to the chimne or to boilers, in case the gases are to generate steam. The air enters by the o I j,passingfrom acekbel'owtheinte i to the ace e a ve the same and thencethe com ustion fines l' l in the walls of theV coking chamber g. The incoming cool air is in one series of passages of the heat. interch er, and the hot spent gases are in odiacent, ut entirely separate, series of v theheat ofthe spent esbeingtransmit the incoming airin t eadiacentp =:=I tinuously thro h the interven' The operation o the heat inteiianger as a preheater of the air can be discontinued merciy shunting the het gas past the heat inte nger by any means extern or into the Voven structure. This in no way interferes with the colting process in the oven, 'merely` more gas to be burned in the oven ues when maintaining the heats with cool air. 5 If desired a damper m ma.4 be

located in the'iiue f, as shown to contro the How of 'the spent gases. Thus, the interchanger, be' most accessible for repairs, not only may e entirely taken out and replaced nithout interfering with the oven structure, but also without interfering with the cokxngpro'cess; moi-over, being structurall independent, it can expand and contract wi hout-affecting the'oven structure and without injuryto itself.

theY operation of the interchanger, the

v.incoming-cold'est air traverses the lower tile i n p n p passagesin-thinlalersad'acenttoandacmss the Q'IIibestiQEiiIMe,

heg-directionfof-- e (col outgoing spent los g gases; also the hottest incoming nir traverses I, the u per tile passages in thin layeis adjacent i to an across the direction of the hottest outgoing spent This permits a maximum s efficiency o heat exchange or recovery by the interchanger in contrast to the poor heat recovery by systems where all, or a portion, of the ases and the air are traveling in the same Erection The delivery of the highly heated air from the interchanger into the space above in proximity to the hot spent g 1 in the sole Hue maintains a uniformly 'h temperature at this point, preserving high heats inthe bottom of the coking chamber. Thus, not only is the air most completely heated; but the oven charge con pletely coked.

By means of the arrangement heremshown and described, the air is very completely heated, and better results in coking are obtained, to ther with a larger yield of surplus gas, than y any means heretofore known to me; advantages which will be readily appreciated by those skilled in the art.

I have described herein a single coke oven, with its interch and connections, but it will be understoo that in. practice such oven forms one unit of a block of ovens, each ad ditonal unit of which is formed by the construction of a single wall, with an additional inte er located and constructed in the manner s own herein.

What I claim as new, and desire to secure by Letters Patent, is:

1. In a coke oven arrangement, the cornbination of a coke oven, having its side walls extended downward, so as to form an open ace below the oven, combustion ilues in side walls ofthe oven, a heat intere r structurally independent of the oven, ocated in said open space, and independently supported by the same foundations as the extended side walls, a sole flue for the reception of the spengases of combustion extending horizont y below the floor oi the oven an nclosed hot air space between said sole due and the interchanger and communieating with the combustion fiues, and a discharge flue from the sole flue, having a ceni trally located partition, whereby the spent gases of combustion are caused lo pass through one-half oi' the intcrchanger in one direction, and through the other hull' oi' the intel-changer to the outlet, in the reverse direction and moans for admitting heat to the heat interchangcr below the same, substantially as and for the purposes set forth.

2. In a coke oven arrangement, the combination of acoking chamber, having side walls extended downward below the floor thereof, a heat interchanger located below said chamber and between said walls, and independently supiorted by the same foundations, an inclose space for the reception of heated air, located immediately above the interchanger, a sole iue for the rece tion of the gases of combustion, located ctween said cokin chamber and said hot air space and a flue eading from the sole flue to the interchanger, and means for admitting air to the lower part of the interchanger, substantially as set forth.

3. In a coke oven arrangement, the combination with a heat intere-ha r located below, and structurally indepen ent of the oven, and independently su rted on the same foundations as the w of the oven structure, said interchanger being formed of superposed hollow bricks, so arranged that the hollowinteriors of the bricks form a series of fines running in one direction and spaces between saidbricks form a series of lues running at right angles to the first mentioned ilues, and a spent gas flue arranged to feed the spent gases of combustion to the interchanger, a partition in said ilue for causing said ases to pass through a portion of the intere anger m one direction and throu h other ortions of the intercba r to tie outlet m the reverse direction, su stantially as and for the pur oses set forth.

In testimony w ereof I have affixed my signature in presence of two subscribing witnesses.

ERNEST SOLVAY. Witnesses:

F. Fons'rnmrorr, A. AULLUaPnY. 

